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xenn [34]
3 years ago
14

How do cations of the same charge change in radius as you move down a column in the periodic table?

Chemistry
1 answer:
zepelin [54]3 years ago
4 0

Answer:

<em>The cations of the same charge </em><u>increase </u><em>in radius as you move down a column in the periodic table.</em>

Explanation:

Moving down a column in the periodic table means to increase the main energy level and keeping the number of electrons in the outermost shell (the number of valence electrons).

The metals (elements in the left side of the periodic table) form positive ions, named cations, when they lose one or more valence electrons.

To depict this more clearly, consider, for example, the column 1 in the periodic table, which is the group of alkal metals: Li, Na, K, Rb, Cs, and Fr.

As you move down that column you ge the following results

Element     Period                          Number of                   Main cation

                  (main energy level)     valence electrons

Li                 2                                   1                                    Li⁺

Na               3                                   1                                    Na⁺

K                  4                                   1                                   K⁺

Rb                5                                   1                                   Rb⁺

Cs                6                                   1                                   Cs⁺

Fr                 7                                   1                                    Fr⁺

Then, in the last column of the previous table, you see that all the cations have the same charge, because each one is formed after lossing the same number of electrons from the neutral atom (1).

Since, as you move down the column in the periodic table, the valence electrons are in higher main energy levels, which means that the size of both the neutral atom and the and the resultant cation formed after losing the valence electron are bigger than the cation of the previous level. Hence, as a general rule, the radius of the cations of the same charge increase as you move down a colum in the periodic table.

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SIZIF [17.4K]
Q=m°C<span>ΔT
=(500g) x (1 cal/g.</span>°C) x (48°C-21°C) = 13500 cal
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8 0
3 years ago
3. A mass of 0.15 ounces is equal to how many grams?
garik1379 [7]

Answer:

Option C = 4.25 g

Explanation:

Ounce and grams are unit of mass. Ounce is larger unit while gram is smaller unit. The one ounce is consist of 28.35 g or we can say that one ounce is equal to 28.35 g. In order to convert the given ounce value into grams the value is multiply with 28.35 g.

Given data:

Mass = 0.15 ounce

Mass in gram = ?

Solution:

One ounce is equal to 28.35 g, so

0.15 × 28.35 = 4.25 g

5 0
3 years ago
Calculating molarity using solute moles A chemist prepares a solution of sodium chloride (NaCl) by measuring out 6.89 mol of sod
hram777 [196]

Answer: Concentration of the chemist's sodium chloride solution is 34.4 mol/L.

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

n= moles of solute

V_s = volume of solution in ml

Given : moles of NaCl = 6.89

volume of solution = 200 ml

Putting in the values we get:

Molarity=\frac{6.89\times 1000}{200}=34.4mol/L

Thus the concentration of the chemist's sodium chloride solution is 34.4 mol/L.

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What makes science reliable
ch4aika [34]

Answer:

Science is really reliable because there is research and math and brains. Actual science are results from experiments, so it's mainly always correct.

Explanation:

5 0
2 years ago
Help me nowww please and thanks
kati45 [8]

The answer to your question is Gallium, or GA. The trick is to always check if they are along the same vertical column. This indicates that they have the same Valence electrons, which is involved in all the bonding and define the electronegative status of the atom.

4 0
3 years ago
Read 2 more answers
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